Percentile life expectancy calculator

The life expectancies most commonly quoted in official U.S. tables and
reports are wrong for retirement planning on 4 counts:

Mean vs. percentile - for retirement planning purposes you have
to plan assuming you might live significantly longer than the mean
reported value, such as the 95th percentile life expectancy, for which
there is a 95% chance that you won't exceed

Individual vs. couple - for many, what matters is the life
expectancy of the last survivor